根据车种编码判断车种，SCA是（）的车种编码。
A.双层餐车
B.双层硬卧车
C.双层软卧车
D.双层硬座车
参考答案：A
On returning home, she found a note _______ to the door, _______ “Call in later.”
A．attaching; reading
B．attaches; saying
C．attached; which reads
D．attached; reading
疑诊肺栓塞时应进行的检查，除了（）
A.X线胸片
B.心电图
C.肺活检
D.血浆D-二聚体
E.下肢深静脉超声
